LMV Series
Technical Instructions
LV5-1000
Menu Path Parameter Default Range Description
51.1
52.2
52.4
LEGEND - Password Access: (U)=User, (S)=Service, (O)=OEM, Shaded = Commonly Used, ** = Must Set, X = Has Function, / = Partial Function
LMV
PostpurgeLockout (S) 120s 0.2s-63min
If a lockout condition occurs, and the combustion air fan was running, it will continue
running in the lockout phase (phase 00) for this period of time. This time replaces the
postpurge time in the event of a lockout. If the combustion air fan was not running, the fan
will remain off for the rest of the lockout phase.
MaxTmeStartRel (S) 120s 0.2s-63min
When the LMV5 gets a call for heat, this is the maximum time the LMV5 will hold in phase 21
waiting for a start release. If this time expires and the start release is not made, the LMV5
will go into alarm.
See: Params & Display > BurnerControl > Times >TimesStartup1 > MinTmeStartRel
AlarmStartPrev (S) deact
activated
deactivated
Determines if the alarm OUTPUT X3-01.2 will be energized in the event of a start prevention
(an alarm in standby - Phase 12). AlarmDelay sets how long the LMV5 will wait before going
into alarm.
Standby Error (S) deact
activated
deactivated
If this is set to activated, an alarm will occur if the safety loop is opened in phase 12
(standby). If deactivated, the safety loop can be open when in phase 12 without alarm.
NormDirectStart (S)
Normal
Start
NormalStart
DirectStart
Enables the LMV5 to skip postpurge (T3) time, and go directly into prepurge if there is a call
for heat during postpurge T1. If set to DirectStart, a 3-way valve on OUTPUT X4-03.3 must be
used to check the air pressure switch.
OilPumpCoupling (S)
Magnet-
coupl
Magnetcoupl
Directcoupl
Combined with IgnOilPumpStart determines the behavior of OUTPUT X6-02.3:
1) Magnetcoupl - the output will energize, in either phase 22 or 38, depending on the setting
of IgnOilPumpStart . Output will de-energize as soon as main oil valves close.
2) Directcoupl - the output will energize at the same time as the blower, and de-energizes 15
seconds after the blower.
IgnOilPumpStart (S) on in Ph22
on in Ph22
on in Ph38
If Magnetcoupl is selected above, this determines when OUTPUT X6-02.3 is energized. If a
direct spark oil train is selected, spark will occur during prepurge if set to Ph22.
ForcedIntermit (S) activated
activated
deactivated
When activated, this setting forces the LMV5 to shut the burner down, every 23 hours 50
minutes. The burner will automatically restart. The purpose of this is to check and cycle
safety devices. If a non-self check flame scanner is used, this must be activated.
Skip PrepurgeGas (S) deact If activated, prepurge for gas will be skipped. Not recommended for most burners.
Skip PrepurgeOil (O) deact If activated, prepurge for oil will be skipped. Not recommended for most burners.
Params & Display>
BurnerControl>
Times>
TimesGeneral
Params & Display>
BurnerControl>
Configuration>
ConfigGeneral
activated
deactivated
x
x x x
x x
SCC Inc. Page 10 Section 3
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